US3690291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deposition apparatus
Assignee: National Aeronautics and Space Administration
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Filing: 1971-04-28
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Granted: 1972-09-12
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Expires: 1991-04-28
Abstract
Abstract Means feed wire to be evaporated into contact with a central portion of an evaporator-filament having an electric current passing therethrough. An electrical potential difference is maintained between the wire and one side of said filament whereby the vapor is ionized.
Inventors
- 👤 Joseph H Judd
- 👤 Raymond L Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:59
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
Apparatus for depositing a coating of metallic material on a nonmetallic substrate comprising: a plate with an electric potential applied to it and with the substrate attached to it; an electrically heated filament; a rod of the coating material electrically connected to one side of said filament; and means for striking said rod against the central portion of said filament to form a very fine ionized vapor of said coating material whereby said vapor is attracted by said plate and deposited on said substrate.
Claim 2
Dependent Claim
84 words
Apparatus for depositing a coating of metallic material on a nonmetallic substrate comprising: a plate with an electric potential applied to it and with the substrate attached to it; an electrically heated filament; a rod of the coating material electrically connected to one side of said filament; and means for striking said rod against the central portion of said filament to form a very fine ionized vapor of said coating material whereby said vapor is attracted by said plate and deposited on said substrate.
Claim 3
Dependent Claim
29 words
Apparatus according to claim 1 with two plates instead of one and with a positive potential applied to one plate and a negative potential applied to the other plate.
Claim 4
Dependent Claim
75 words
Apparatus according to claim 1 wherein said means for striking said rod against the central portion of said filament includes rotating means for holding said rod off-center of rotation of said rotating means; and means for moving said rotating means in the direction of the central portion of said filament while said rotating means is rotating whereby during each revolution of said rotating means said rod is wiped across the central portion of said filament.
Claim 5
Dependent Claim
40 words
Apparatus according to claim 3 wherein said means for moving said rotating means in the direction of the central portion of said filament includes a motor that rotates a threaded shaft that has said holding means attached to its end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |